Isolation operating mechanism on environmental protection cabinet

Abstract

This invention discloses an isolation operation mechanism for an environmental protection cabinet, comprising a frame, a main shaft, a circuit breaker operating shaft, a grounding operating shaft, and an energy storage component. The main shaft, circuit breaker operating shaft, and grounding operating shaft are rotatably mounted on the frame. The energy storage component is disposed between the circuit breaker operating shaft and the grounding operating shaft. The main shaft is linked to the circuit breaker operating shaft and the grounding operating shaft via a linkage component. The linkage component includes a linkage plate, a first transmission plate, a second transmission plate, a first connecting plate, and a second connecting plate. The linkage plate, the first transmission plate, and the second transmission plate are respectively linked and mounted on the main shaft, the circuit breaker operating shaft, and the grounding operating shaft. One end of the first connecting plate is hinged to the linkage plate, and the other end is movably connected to the first transmission plate. One end of the second connecting plate is hinged to the linkage plate, and the other end is movably connected to the second transmission plate. This invention significantly reduces the wear of transmission components and effectively extends the service life of the isolation operation mechanism.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to an isolation operation mechanism for an environmental protection cabinet. Background Technology

[0002] Currently, with the development of the national economy and the advancement of technology, many large-scale power consumption sites have widely adopted environmentally friendly gas-filled switchgear, also known as environmental protection cabinets. Disconnect switches are commonly used in the technology of these cabinets. As a type of circuit switch within the environmental protection cabinet, the disconnect switch not only functions as a regular switch but also ensures a safe disconnection and reliable grounding of the isolation terminal, absolutely guaranteeing the safety of circuit maintenance and repair personnel. It is one of the most important components in environmental protection cabinets.

[0003] Most failures of existing disconnect switches occur in the operating mechanism. The original disconnect operating mechanism mostly adopted a fork structure, which has relatively severe wear of the components and a short lifespan. Therefore, there is an urgent need in the market to develop a disconnect operating mechanism with less wear to extend its service life. Summary of the Invention

[0004] The purpose of this invention is to provide an isolation operation mechanism for an environmental protection cabinet. This invention greatly reduces the wear of transmission components and effectively extends the service life of the isolation operation mechanism.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an isolation operation mechanism on an environmental protection cabinet, comprising a frame, a main shaft, a circuit breaker operating shaft, a grounding operating shaft, and an energy storage component. The main shaft, circuit breaker operating shaft, and grounding operating shaft are rotatably mounted on the frame. The energy storage component is disposed between the circuit breaker operating shaft and the grounding operating shaft. The main shaft is linked to the circuit breaker operating shaft and the grounding operating shaft via a linkage component. The main shaft switches between a circuit breaker state and a circuit breaker state when the circuit breaker operating shaft rotates via the linkage component. The main shaft switches between a circuit breaker state and a grounding state when the grounding operating shaft rotates via the linkage component. The linkage component comprises a linkage plate, a first transmission plate, a second transmission plate, a first connecting plate, and a second connecting plate. The linkage plate, the first transmission plate, and the second transmission plate are respectively linked and mounted on the main shaft, the circuit breaker operating shaft, and the grounding operating shaft. One end of the first connecting plate is hinged to the linkage plate, and the other end of the first connecting plate is movably connected to the first transmission plate. One end of the second connecting plate is hinged to the linkage plate, and the other end of the second connecting plate is movably connected to the second transmission plate.

[0006] By adopting the above technical solution, a linkage structure is used to replace the original shift fork structure for transmitting power to the main shaft, the opening and closing operating shaft, and the grounding operating shaft. This reduces friction and collision between components, greatly reduces wear on transmission components, and effectively extends the service life of the isolation operating mechanism.

[0007] The present invention is further configured such that the first transmission disk and the second transmission disk are respectively provided with a first limiting protrusion and a second limiting protrusion, the frame is provided with a first limiting rod and a second limiting rod that respectively limit the first limiting protrusion and the second limiting protrusion, the first connecting plate is provided with a first linkage shaft, the first transmission disk is provided with a first arc hole that cooperates with the first linkage shaft, the first arc hole is coaxial with the opening and closing operation shaft, the second connecting plate is provided with a second linkage shaft, the second transmission disk is provided with a second arc hole that cooperates with the second linkage shaft, the second arc hole is coaxial with the grounding operation shaft.

[0008] By adopting the above technical solution, the first limit rod and the second limit rod can position the first transmission plate and the second transmission plate when the main shaft is in the open state, so that the linkage component can be restored to the initial state. At the same time, it can also ensure that when the opening and closing operation shaft performs the closing operation, the grounding operation shaft does not move, and when the grounding operation shaft performs the grounding operation, the opening and closing operation shaft does not move.

[0009] The invention is further configured such that the frame is provided with a third limiting rod for limiting the linkage plate. The linkage plate is symmetrically provided with a first positioning groove and a second positioning groove. When the main shaft is in the closed state, the third limiting rod is engaged with the first positioning groove on the linkage plate. When the main shaft is in the grounded state, the third limiting rod is engaged with the second positioning groove on the linkage groove.

[0010] By adopting the above technical solution, the travel limit of the linkage panel can be implemented, thereby limiting the clockwise and counterclockwise rotation of the main shaft, ensuring that the circuit breaker is closed and grounded in place.

[0011] The present invention is further configured such that the energy storage component includes a first spring seat, a second spring seat, a first spring guide plate, a second spring guide plate, and an energy storage spring. The first spring seat and the second spring seat are respectively linked and installed on the opening / closing operating shaft and the grounding operating shaft. One end of the first spring guide plate is hinged to the first spring seat, and one end of the second spring guide plate is hinged to the second spring seat. The energy storage spring is sleeved on the outer periphery of the first spring guide plate and the second spring guide plate. The first spring guide plate is provided with a first support step that abuts against one end of the energy storage spring, and the second spring guide plate is provided with a second support step that abuts against the other end of the energy storage spring.

[0012] By adopting the above technical solution, the energy storage spring acts as an energy storage component when the opening and closing operating shaft and the grounding operating shaft rotate. Compared with the traditional method that requires different energy storage assemblies for the opening and closing operating shaft and the grounding operating shaft, this structure is more streamlined, reduces processing costs, and can effectively reduce the failure rate.

[0013] The present invention is further configured such that there are two of each of the first spring guide plate and the second spring guide plate, and the two second spring guide plates are disposed between the two first spring guide plates.

[0014] By adopting the above technical solution, the stability of the movement of the first spring guide plate and the second spring guide plate can be improved, thereby improving the stability of the extension and retraction of the energy storage spring.

[0015] The invention is further configured to include a limiting component, which includes a first limiting plate, a first limiting torsion spring, a second limiting plate, and a second limiting torsion spring. The frame is provided with a first fixed shaft and a second fixed shaft. The first limiting plate and the second limiting plate are rotatably mounted on the first fixed shaft and the second fixed shaft, respectively. The first limiting plate has a first linkage protrusion and a first locking protrusion at one end near the opening / closing operation shaft and at one end near the main shaft, respectively. The second limiting plate has a second linkage protrusion and a second locking protrusion at one end near the grounding operation shaft and at one end near the main shaft, respectively. A first limiting screw and a second limiting screw are respectively installed on the first fixed shaft and the second fixed shaft. The first limiting torsion spring is sleeved on the first fixed shaft. One end of the first limiting torsion spring is attached to the first limiting screw, and the other end of the first limiting torsion spring is attached to the first limiting plate. The second limiting torsion spring is sleeved on the second fixed shaft. One end of the second limiting torsion spring is attached to the second limiting screw, and the other end of the second limiting torsion spring is attached to the second limiting plate. The main shaft is provided with a locking cam. The opening and closing operation shaft and the grounding operation shaft are respectively linked and installed with a first linkage cam and a second linkage cam. When the main shaft is in the opening state, the first locking protrusion on the first limiting plate and the second locking protrusion on the second limiting plate abut against the two sides of the locking cam, and the short shaft end of the first linkage cam abuts against the first linkage protrusion of the first limiting plate, and the short shaft end of the second linkage cam abuts against the second linkage protrusion of the second limiting plate.

[0016] By adopting the above technical solution, not only can the main shaft be pressed against the circuit breaker to ensure that it is in the open position after the opening operation, but also the main shaft can be prevented from deflecting towards the grounding state during the closing operation and from deflecting towards the closing state during the grounding operation, thereby ensuring the stability of the entire operating mechanism and enabling the circuit breaker to be closed, opened, or grounded in place.

[0017] The invention is further configured to include a locking assembly, which includes a baffle plate, a lever, a first return spring, a second return spring, a first spring support, a second spring support, and a spring guide pin. The frame has a front panel with opening / closing operation holes and a grounding operation hole respectively at positions corresponding to the front of the opening / closing operation shaft and the grounding operation shaft. A guide hole is provided on the front panel between the opening / closing operation hole and the grounding operation hole. The baffle plate is slidably mounted on the front panel for opening the opening / closing operation hole or the grounding operation hole. The lever is mounted on the front panel and passes through the guide hole. The first spring support and the second spring support are mounted on the front panel with screws. The two ends of the spring guide pin are respectively mounted on the first spring support and the second spring support. The baffle plate has a first sliding hole that mates with the first spring support and a second sliding hole that mates with the second spring support. A spring pressure block is provided in the middle of the front panel, and the spring pressure block slidably engages with the spring guide pin. The first return spring and the second return spring are respectively sleeved on the spring guide pin at positions corresponding to both sides of the spring pressure block.

[0018] By adopting the above technical solution, in the initial state, the baffle plate blocks the opening / closing operation hole and the grounding operation hole. When a closing operation is required, the baffle plate is slid towards the grounding operation hole by the lever until the opening / closing operation hole is open and the grounding operation hole is closed. At this time, the opening / closing operation shaft can be operated, but the grounding operation shaft cannot. When a grounding operation is required, the baffle plate is slid towards the opening / closing operation hole by the lever until the grounding operation hole is open and the opening / closing operation hole is closed. At this time, the grounding operation shaft can be operated, but the opening / closing operation shaft cannot. This structure serves to prevent misoperation, thereby improving operational safety.

[0019] The present invention is further configured such that a clearance groove is provided at each end of the baffle plate.

[0020] By adopting the above technical solution, it is convenient to insert the operating handle for subsequent operations.

[0021] The invention is further configured such that a first micro switch is installed on the front panel above the baffle plate, the baffle plate is provided with a slider, and the slider is provided with a V-shaped groove that cooperates with the contact of the first micro switch; a V-shaped cam is provided on the main shaft, and a second micro switch and a third micro switch for cooperating with the V-shaped cam are symmetrically installed on the frame at positions corresponding to both sides of the V-shaped cam.

[0022] By adopting the above technical solution, the first micro switch is used to detect the position of the baffle plate. The first micro switch is connected to the main control circuit of the environmental protection cabinet. When the slider on the baffle plate abuts against the contact on the first micro switch, the main control circuit immediately cuts off the power supply to the drive motor of the electric operating mechanism, thereby switching to manual operation mode, making it more intelligent and safer. The second and third micro switches are connected to the main control circuit. When the main shaft is in the closed state, the V-shaped cam cooperates with the contact of the first micro switch. When the main shaft is in the grounded state, the V-shaped cam cooperates with the contact of the second micro switch, providing an electrical signal to the main control circuit of the environmental protection cabinet to indicate the change in state.

[0023] The invention is further configured such that a locking mounting plate is provided on the front panel, a pneumatic component is provided on the locking mounting plate, and a locking bend is provided at one end of the baffle plate near the opening and closing operation hole for cooperating with the protruding end of the pneumatic component.

[0024] By adopting the above technical solution, during maintenance operations, the extended end of the pneumatic component limits the locking bend, preventing the baffle plate from moving toward the opening operation hole. Consequently, the opening and closing operation holes cannot be opened, and unauthorized personnel cannot perform the closing operation, thus avoiding safety accidents caused by accidental closing of the circuit breaker. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a first view structural schematic diagram of the energy storage component and linkage component of the present invention; Figure 3 This is a second view structural diagram of the energy storage component and linkage component of the present invention; Figure 4 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 5 This is a schematic diagram of the cooperation structure between the V-shaped cam and the second and third micro switches of the present invention; Figure 6 This is a schematic diagram of the locking component of the present invention.

[0026] In the diagram: 1. Frame; 2. Main shaft; 3. Opening / closing operating shaft; 4. Grounding operating shaft; 5. Energy storage component; 6. Linkage component; 7. Linkage plate; 8. First transmission plate; 9. Second transmission plate; 10. First connecting plate; 11. Second connecting plate; 12. First limit protrusion; 13. Second limit protrusion; 14. First limit rod; 15. Second limit rod; 16. First linkage shaft; 17. First arc hole; 18. Second linkage shaft; 19. Second arc hole 20. Arc hole; 21. Third limiting rod; 22. First positioning groove; 23. Second positioning groove; 24. First spring seat; 25. Second spring seat; 26. First spring guide plate; 27. Second spring guide plate; 28. Energy storage spring; 29. ​​First support step; 30. Second support step; 31. Limiting assembly; 32. First limiting plate; 33. Second limiting torsion spring; 34. Second limiting torsion spring; 35. First fixed shaft; 36. Second fixed shaft; 37. First linkage protrusion; 38. First locking protrusion; 39. Second linkage protrusion; 40. Second locking protrusion; 41. First limiting screw; 42. Second limiting screw; 43. Locking cam; 44. First linkage cam; 45. Second linkage cam; 46. Locking assembly; 47. Baffle plate; 48. Toggle lever; 49. First return spring; 50. Second return spring; 51. First spring support; 52. Second 53. Spring support; 54. Spring guide pin; 55. Front panel; 56. Opening / closing operation hole; 57. Grounding operation hole; 58. Guide hole; 59. First sliding hole; 60. Second sliding hole; 61. Spring pressure block; 62. Relief groove; 63. First micro switch; 64. Slider; 65. V-groove; 66. V-cam; 67. Second micro switch; 68. Third micro switch; 69. Locking mounting plate; 70. Pneumatic component; 71. Locking bend. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example: As attached Figures 1-6The illustrated isolation operation mechanism on an environmental protection cabinet includes a frame 1, a main shaft 2, a circuit breaker / closer operating shaft 3, a grounding operating shaft 4, and an energy storage component 5. The main shaft 2, circuit breaker / closer operating shaft 3, and grounding operating shaft 4 are rotatably mounted on the frame 1. The energy storage component 5 is disposed between the circuit breaker / closer operating shaft 3 and the grounding operating shaft 4. The main shaft 2 is linked to the circuit breaker / closer operating shaft 3 and the grounding operating shaft 4 via a linkage component 6. The main shaft 2 switches between a circuit breaker / closer state and a circuit breaker / closer state when the circuit breaker / closer operating shaft 3 rotates, and the main shaft 2 switches between a circuit breaker / open state and a grounding state when the grounding operating shaft 4 rotates. Component 6 includes a linkage plate 7, a first transmission plate 8, a second transmission plate 9, a first connecting plate 10, and a second connecting plate 11. The linkage plate 7, the first transmission plate 8, and the second transmission plate 9 are respectively linked and mounted on the main shaft 2, the opening / closing operating shaft 3, and the grounding operating shaft 4. The linkage plate 7 rotates synchronously with the main shaft 2, the first transmission plate 8 rotates synchronously with the opening / closing operating shaft 3, and the second transmission plate 9 rotates synchronously with the grounding operating shaft 4. One end of the first connecting plate 10 is hinged to the linkage plate 7, and the other end is movably connected to the first transmission plate 8. One end of the second connecting plate 11 is hinged to the linkage plate 7, and the other end is movably connected to the second transmission plate 9. By using a linkage structure instead of the original shift fork structure to transmit power to the main shaft 2, the opening / closing operating shaft 3, and the grounding operating shaft 4, friction and collisions between components are reduced, significantly reducing wear on transmission components and effectively extending the service life of the isolation operating mechanism.

[0029] As attached Figure 2 and attached Figure 3 As shown, the first transmission disk 8 and the second transmission disk 9 are respectively provided with a first limiting protrusion 12 and a second limiting protrusion 13. The frame 1 is provided with a first limiting rod 14 and a second limiting rod 15 that respectively limit the first limiting protrusion 12 and the second limiting protrusion 13. The first connecting plate 10 is provided with a first linkage shaft 16. The first transmission disk 8 is provided with a first arc hole 17 that cooperates with the first linkage shaft 16. The first arc hole 17 is coaxial with the opening and closing operation shaft 3. The second connecting plate 11 is provided with a second linkage shaft 18. The second transmission disk 9 is provided with a second arc hole 19 that cooperates with the second linkage shaft 18. The second arc hole 19 is coaxial with the grounding operation shaft 4. The first limit rod 14 and the second limit rod 15 can position the first transmission disc 8 and the second transmission disc 9 when the main shaft 2 is in the open state, so that the linkage component 6 can be restored to the initial state. At the same time, it can also ensure that when the opening and closing operation shaft 3 performs the closing operation, the grounding operation shaft 4 does not move, and when the grounding operation shaft 4 performs the grounding operation, the opening and closing operation shaft 3 does not move.

[0030] As attached Figure 2As shown, the frame 1 is also equipped with a third limiting rod 20 for limiting the movement of the linkage plate 7. The linkage plate 7 has symmetrically arranged first positioning grooves 21 and second positioning grooves 22. When the main shaft 2 is in the closed state, the third limiting rod 20 engages with the first positioning groove 21 on the linkage plate 7. When the main shaft 2 is in the grounded state, the third limiting rod 20 engages with the second positioning groove 22 on the linkage plate. This design can limit the travel of the linkage plate 7, thereby limiting the clockwise and counterclockwise rotation of the main shaft 2, ensuring that the circuit breaker is closed and grounded in place.

[0031] As attached Figure 2 and attached Figure 3 As shown, the energy storage component 5 includes a first spring seat 23, a second spring seat 24, a first spring guide plate 25, a second spring guide plate 26, and an energy storage spring 27. The first spring seat 23 and the second spring seat 24 are respectively linked and installed on the opening and closing operation shaft 3 and the grounding operation shaft 4. The first spring seat 23 rotates synchronously with the opening and closing operation shaft 3, and the second spring seat 24 rotates synchronously with the grounding operation shaft 4. One end of the first spring guide plate 25 is hinged to the first spring seat 23, and one end of the second spring guide plate 26 is hinged to the second spring seat 24. The energy storage spring 27 is sleeved on the outer periphery of the first spring guide plate 25 and the second spring guide plate 26. The first spring guide plate 25 is provided with a first support step 28 that abuts against one end of the energy storage spring 27, and the second spring guide plate 26 is provided with a second support step 29 that abuts against the other end of the energy storage spring 27. The energy storage spring 27 acts as an energy storage component when the opening and closing operation shaft 3 and the grounding operation shaft 4 rotate. Compared with the traditional method that requires different energy storage assemblies for the opening and closing operation shaft 3 and the grounding operation shaft 4, this structure is more streamlined, reduces processing costs, and effectively reduces the failure rate.

[0032] The design includes two first spring guide plates 25 and two second spring guide plates 26, with the two second spring guide plates 26 positioned between the two first spring guide plates 25. This design improves the stability of the movement of the first spring guide plates 25 and the second spring guide plates 26, thereby enhancing the stability of the extension and retraction of the energy storage spring 27.

[0033] As attached Figure 2 and attached Figure 4As shown, it also includes a limiting component 30, which includes a first limiting plate 31, a first limiting torsion spring 32, a second limiting plate 33, and a second limiting torsion spring 34. The frame 1 is provided with a first fixed shaft 35 and a second fixed shaft 36. The first limiting plate 31 and the second limiting plate 33 are rotatably mounted on the first fixed shaft 35 and the second fixed shaft 36, respectively. The first limiting plate 31 has a first linkage protrusion 37 and a first locking protrusion 38 at one end near the opening / closing operation shaft 3 and at one end near the main shaft 2, respectively. The second limiting plate 33 has a second linkage protrusion 39 and a second locking protrusion 40 at one end near the grounding operation shaft 4 and at one end near the main shaft 2, respectively. A first limiting screw 41 and a second limiting screw 42 are respectively installed on the first fixed shaft 35 and the second fixed shaft 36. The first limiting torsion spring 32 is sleeved on the first fixed shaft 35. One end of the first limiting screw 41 is attached to the first limiting screw 41, and the other end of the first limiting torsion spring 32 is attached to the first limiting plate 31. The second limiting torsion spring 34 is sleeved on the second fixed shaft 36. One end of the second limiting torsion spring 34 is attached to the second limiting screw 42, and the other end of the second limiting torsion spring 34 is attached to the second limiting plate 33. The main shaft 2 is provided with a locking cam 43. The opening and closing operation shaft 3 and the grounding operation shaft 4 are respectively linked and installed with a first linkage cam 44 and a second linkage cam 45. When the main shaft 2 is in the opening state, the first locking protrusion 38 on the first limiting plate 31 and the second locking protrusion 40 on the second limiting plate 33 respectively abut against the two sides of the locking cam 43. The short shaft end of the first linkage cam 44 abuts against the first linkage protrusion 37 of the first limiting plate 31, and the short shaft end of the second linkage cam 45 abuts against the second linkage protrusion 39 of the second limiting plate 33. This design not only ensures that the main shaft 2 is pressed against the circuit breaker after the tripping operation to ensure that the circuit breaker is tripped, but also prevents the main shaft 2 from deflecting towards the grounding state during the closing operation and from deflecting towards the closing state during the grounding operation, thereby ensuring the stability of the entire operating mechanism and enabling the circuit breaker to be closed, tripped, or grounded in place.

[0034] As attached Figure 1 and attached Figure 6As shown, it also includes a locking assembly 46, which includes a stop plate 47, a lever 48, a first return spring 49, a second return spring 50, a first spring support 51, a second spring support 52, and a spring guide pin 53. The frame 1 is provided with a front panel 54. The front panel 54 has a stop operation hole 55 and a grounding operation hole 56 respectively located in front of the operating shaft 3 and the grounding operation shaft 4. A guide hole 57 is provided on the front panel 54 between the stop operation hole 55 and the grounding operation hole 56. The stop plate 47 is slidably mounted on the front panel 54 for opening the stop operation hole 55 or the grounding operation hole 56. The lever 48 is mounted on... On the front panel 54, the lever 48 passes through the guide hole 57. The first spring support 51 and the second spring support 52 are mounted on the front panel 54 by screws. The two ends of the spring guide pin 53 are respectively mounted on the first spring support 51 and the second spring support 52. The baffle plate 47 is provided with a first sliding hole 58 that cooperates with the first spring support 51 and a second sliding hole 59 that cooperates with the second spring support 52. A spring pressure block 60 is provided in the middle of the front panel 54, and the spring pressure block 60 slides with the spring guide pin 53. The first return spring 49 and the second return spring 50 are respectively sleeved on the spring guide pin 53 at positions corresponding to both sides of the spring pressure block 60. Initially, the baffle plate 47 blocks the opening / closing operation hole 55 and the grounding operation hole 56. When a closing operation is required, the lever 48 moves the baffle plate 47 towards the grounding operation hole 56 until the opening / closing operation hole 55 is open and the grounding operation hole 56 is closed. At this point, the opening / closing operation shaft 3 can be operated, but the grounding operation shaft 4 cannot. When a grounding operation is required, the lever 48 moves the baffle plate 47 towards the opening / closing operation hole 55 until the grounding operation hole 56 is open and the opening / closing operation hole 55 is closed. At this point, the grounding operation shaft 4 can be operated, but the opening / closing operation shaft 3 cannot. This structure prevents misoperation, thereby improving operational safety.

[0035] As attached Figure 6 As shown, each end of the baffle plate 47 is provided with a clearance groove 61, the inner edge of which is arc-shaped. This design facilitates the subsequent insertion of the operating handle for corresponding operations.

[0036] As attached Figure 5 and attached Figure 6As shown, a first micro switch 62 is installed on the front panel 54 at a position above the baffle plate 47. A slider 63 is provided on the baffle plate 47. The slider 63 is provided with a V-shaped groove 64 that cooperates with the contact of the first micro switch 62. A V-shaped cam 65 is provided on the main shaft 2. A second micro switch 66 and a third micro switch 67 for cooperating with the V-shaped cam 65 are symmetrically installed on the frame 1 at positions corresponding to both sides of the V-shaped cam 65. The first micro switch 62 is used to detect the position of the baffle plate 47. The first micro switch 62 is connected to the main control circuit of the environmental protection cabinet. When the slider 63 on the baffle plate 47 abuts against the contact on the first micro switch 62, the main control circuit immediately cuts off the power to the drive motor of the electric operating mechanism, thereby switching to manual operation mode, making it more intelligent and safer. The second micro switch 66 and the third micro switch 67 are connected to the main control circuit. When the main shaft 2 is in the closed state, the V-shaped cam 65 cooperates with the contact of the first micro switch 62. When the main shaft 2 is in the grounded state, the V-shaped cam 65 cooperates with the contact of the second micro switch 66, giving the environmental protection cabinet's main control circuit an electrical signal indicating the change in state.

[0037] As attached Figure 6 As shown, the front panel 54 is also provided with a locking mounting plate 68, on which a pneumatic component 69, which is a cylinder, is mounted. The end of the baffle plate 47 near the opening / closing operation hole 55 has a locking bend 70 for engaging with the extended end of the pneumatic component 69. During maintenance operations, the extended end of the pneumatic component 69 limits the locking bend 70, preventing the baffle plate 47 from moving towards the opening operation hole. Consequently, the opening / closing operation hole 55 cannot be opened, preventing unauthorized personnel from performing the closing operation and avoiding safety accidents caused by accidental closing of the circuit breaker.

[0038] Working principle: In the initial state, the main operating shaft is in the open state. At this time, the first limiting protrusion 12 on the first transmission disk 8 abuts against the first limiting rod 14, and the second limiting protrusion 13 on the second transmission disk 9 abuts against the second limiting rod 15. At the same time, the first locking protrusion 38 of the first limiting plate 31 and the second locking protrusion 40 of the second limiting plate 33 abut against the locking cam 43 of the main shaft 2. The first linkage protrusion 37 of the first limiting plate 31 and the second linkage protrusion 39 of the second limiting plate 33 abut against the short shaft end of the first linkage cam 44 and the short shaft end of the second linkage cam 45, respectively. At this time, the energy storage spring 27 on the energy storage component 5 is in the energy release state. The first linkage shaft 16 on the first connecting plate 10 of the linkage component 6 is located inside the first arc hole 17 of the first transmission disk 8, and the second linkage shaft 18 on the second connecting plate 11 of the linkage component 6 is located inside the second arc hole 19 of the second transmission disk 9. When performing the closing operation, first push the lever 48 to slide the stop plate 47 toward the grounding operation hole 56, opening the opening / closing operation hole 55. Then, insert the operating handle into the opening / closing operation hole 55 and engage it with the opening / closing operation shaft 3. Rotating the operating handle causes the opening / closing operation shaft 3 to rotate. The opening / closing operation shaft 3 drives the first transmission disc 8, the first spring seat 23, and the first linkage cam 44 to rotate. Because the second transmission disc 9 is limited by the second limit rod 15, the grounding operation shaft 4 will not deflect during the rotation of the opening / closing operation shaft 3. At the same time, when the first linkage cam 44 rotates, it drives the first limit plate 31 to rotate against the spring force. The first locking protrusion 38 disengages from the locking cam 43, allowing the main shaft 2 to rotate in one direction. As the first spring seat 23 approaches the second spring seat 24, the energy storage spring 27 is pressed and stored. When the first spring seat 23 and the second spring seat 24 reach their closest center position, the energy storage spring 27 releases energy and pushes the first spring seat 23 away. Simultaneously, the first linkage shaft 16 on the first linkage of the linkage assembly 6 moves relative to the outer end of the first arc hole 17 of the first transmission disk 8, causing the first transmission disk 8 to drive the first connecting plate 10 to rotate. The first connecting plate 10 drives the linkage disk 7 to rotate, and finally the linkage disk 7 drives the main shaft 2 to rotate, realizing the switch from the open state to the closed state. Conversely, rotating the open / close operation shaft 3 in the opposite direction causes the main shaft 2 to rotate in the opposite direction, thus realizing the switch from the closed state to the open state.

[0039] During grounding operation, first push lever 48 to slide the stop plate 47 toward the opening / closing operation hole 55, opening the grounding operation hole 56. Then insert the operating handle into the grounding operation hole 56 and engage it with the grounding operation shaft 4. Rotate the operating handle to cause the grounding operation shaft 4 to rotate. The opening / closing operation shaft 3 drives the first transmission disc 8, the first spring seat 23, and the first linkage cam 44 to rotate. Because the second transmission disc 9 is limited by the second limit rod 15, the grounding operation shaft 4 will not deflect during the rotation of the opening / closing operation shaft 3. At the same time, when the first linkage cam 44 rotates, it drives the first limit plate 31 to rotate against the spring force. The first locking protrusion 38 disengages from the locking cam 43, allowing the main shaft 2 to rotate in one direction. As the first spring seat 23 approaches the second spring seat 24, the energy storage spring 27 is pressed and stored. When the first spring seat 23 and the second spring seat 24 reach their closest center position, the energy storage spring 27 releases energy and pushes the first spring seat 23 away. Simultaneously, the first linkage shaft 16 on the first linkage of the linkage assembly 6 moves relative to the outer end of the first arc hole 17 of the first transmission disk 8, causing the first transmission disk 8 to drive the first connecting plate 10 to rotate. The first connecting plate 10 drives the linkage disk 7 to rotate, and finally the linkage disk 7 drives the main shaft 2 to rotate, realizing the switch from the open state to the closed state. Conversely, rotating the open / close operation shaft 3 in the opposite direction causes the main shaft 2 to rotate in the opposite direction, thus realizing the switch from the closed state to the open state.

Claims

1. An isolation operation mechanism for an environmental protection cabinet, comprising a frame (1), a main shaft (2), a circuit breaker operating shaft (3), a grounding operating shaft (4), and an energy storage component (5), wherein the main shaft (2), the circuit breaker operating shaft (3), and the grounding operating shaft (4) are rotatably mounted on the frame (1), and the energy storage component (5) is disposed between the circuit breaker operating shaft (3) and the grounding operating shaft (4), wherein the main shaft (2) is linked to the circuit breaker operating shaft (3) and the grounding operating shaft (4) via a linkage component (6), wherein the main shaft (2) switches between a circuit breaker state and a circuit breaker state when the circuit breaker operating shaft (3) rotates via the linkage component (6), and wherein the main shaft (2) switches between a circuit breaker state and a grounding state when the grounding operating shaft (4) rotates via the linkage component (6); characterized in that: The linkage assembly (6) includes a linkage disc (7), a first transmission disc (8), a second transmission disc (9), a first connecting plate (10), and a second connecting plate (11). The linkage disc (7), the first transmission disc (8), and the second transmission disc (9) are respectively linked and installed on the main shaft (2), the opening and closing operation shaft (3), and the grounding operation shaft (4). One end of the first connecting plate (10) is hinged to the linkage disc (7), and the other end of the first connecting plate (10) is movably connected to the first transmission disc (8). One end of the second connecting plate (11) is hinged to the linkage disc (7), and the other end of the second connecting plate (11) is movably connected to the second transmission disc (9). It also includes a limiting assembly (30). The limiting assembly (30) includes a first limiting plate (31), a first limiting torsion spring (32), a second limiting plate (33), and a second limiting torsion spring (34). The frame (1) is provided with a first fixed shaft (35) and a second fixed shaft (36). The first limiting plate (31) and the second limiting plate (33) are rotatably mounted on the first fixed shaft (35) and the second fixed shaft (36), respectively. The first limiting plate (31) is provided with a first linkage protrusion (37) at one end near the opening and closing operation shaft (3) and a first locking protrusion (38) at one end near the main shaft (2). The second limiting plate (33) is provided with a first linkage protrusion (37) at one end near the grounding operation shaft (4) and a first locking protrusion (38) at one end near the main shaft (2). The device has a second linkage protrusion (39) and a second locking protrusion (40). A first limiting screw (41) and a second limiting screw (42) are respectively installed on the first fixed shaft (35) and the second fixed shaft (36). The first limiting torsion spring (32) is sleeved on the first fixed shaft (35), with one end of the first limiting torsion spring (32) touching the first limiting screw (41) and the other end touching the first limiting plate (31). The second limiting torsion spring (34) is sleeved on the second fixed shaft (36), with one end of the second limiting torsion spring (34) touching the second limiting screw (42) and the other end touching the second limiting plate (41). On the plate (33), the main shaft (2) is provided with a locking cam (43), and the opening and closing operation shaft (3) and the grounding operation shaft (4) are respectively linked and installed with a first linkage cam (44) and a second linkage cam (45). When the main shaft (2) is in the opening state, the first locking protrusion (38) on the first limit plate (31) and the second locking protrusion (40) on the second limit plate (33) respectively abut against the two sides of the locking cam (43), and the short shaft end of the first linkage cam (44) abuts against the first linkage protrusion (37) of the first limit plate (31), and the short shaft end of the second linkage cam (45) abuts against the second linkage protrusion (39) of the second limit plate (33).The first transmission disc (8) and the second transmission disc (9) are respectively provided with a first limiting protrusion (12) and a second limiting protrusion (13). The frame (1) is provided with a first limiting rod (14) and a second limiting rod (15) that respectively limit the first limiting protrusion (12) and the second limiting protrusion (13). The first connecting plate (10) is provided with a first linkage shaft (16). The first transmission disc (8) is provided with a first arc hole (17) that cooperates with the first linkage shaft (16). The first arc hole (17) is coaxial with the opening and closing operation shaft (3). The second connecting plate (11) is provided with a second linkage shaft (18). The second transmission disc (9) is provided with a second arc hole (19) that cooperates with the second linkage shaft (18). The second arc hole (19) is coaxial with the grounding operation shaft (4).

2. The environmentally shielded on-cabinet isolation mechanism of claim 1, wherein: The frame (1) is also provided with a third limiting rod (20) for limiting the linkage plate (7). The linkage plate (7) is symmetrically provided with a first positioning groove (21) and a second positioning groove (22). When the main shaft (2) is in the closed state, the third limiting rod (20) is engaged with the first positioning groove (21) on the linkage plate (7). When the main shaft (2) is in the grounded state, the third limiting rod (20) is engaged with the second positioning groove (22) on the linkage groove.

3. The environmentally shielded, on-cabinet isolation mechanism of claim 1, wherein: The energy storage component (5) includes a first spring seat (23), a second spring seat (24), a first spring guide plate (25), a second spring guide plate (26), and an energy storage spring (27). The first spring seat (23) and the second spring seat (24) are respectively linked and installed on the opening and closing operation shaft (3) and the grounding operation shaft (4). One end of the first spring guide plate (25) is hinged to the first spring seat (23), and one end of the second spring guide plate (26) is hinged to the second spring seat (24). The energy storage spring (27) is sleeved on the outer periphery of the first spring guide plate (25) and the second spring guide plate (26). The first spring guide plate (25) is provided with a first support step (28) that abuts against one end of the energy storage spring (27), and the second spring guide plate (26) is provided with a second support step (29) that abuts against the other end of the energy storage spring (27).

4. The environmentally shielded on-cabinet isolation mechanism of claim 3, wherein: There are two of each of the first spring guide plate (25) and the second spring guide plate (26), and the two second spring guide plates (26) are disposed between the two first spring guide plates (25).

5. The environmentally shielded, on-cabinet isolation mechanism of claim 1, wherein: It also includes a locking assembly (46), which includes a baffle plate (47), a lever (48), a first return spring (49), a second return spring (50), a first spring support (51), a second spring support (52), and a spring guide pin (53). The frame (1) is provided with a front panel (54). The front panel (54) has openings for the opening and closing operation holes (55) and the grounding operation hole (56) respectively, corresponding to the positions in front of the opening and closing operation shaft (3) and the grounding operation shaft (4). The front panel (54) has a guide hole (57) corresponding to the position between the opening and closing operation hole (55) and the grounding operation hole (56). The baffle plate (47) is slidably disposed on the front panel (54) for opening the opening and closing operation hole (55) or the grounding operation hole (56). The lever (48) is mounted on the front panel (54). Mounted on the front panel (54) with the lever (48) passing through the guide hole (57), the first spring support (51) and the second spring support (52) are mounted on the front panel (54) by screws, the two ends of the spring guide pin (53) are respectively mounted on the first spring support (51) and the second spring support (52), the baffle plate (47) is provided with a first sliding hole (58) that cooperates with the first spring support (51) and a second sliding hole (59) that cooperates with the second spring support (52), the front panel (54) is provided with a spring pressure block (60) in the middle, and the spring pressure block (60) slides with the spring guide pin (53), the first return spring (49) and the second return spring (50) are respectively sleeved on the spring guide pin (53) at the positions corresponding to the two sides of the spring pressure block (60).

6. The environmentally shielded on-cabinet isolation mechanism of claim 5, wherein: The baffle plate (47) is provided with a relief groove (61) at each end.

7. The isolation operation mechanism on the environmental protection cabinet according to claim 5, characterized in that: A first micro switch (62) is installed on the front panel (54) above the baffle plate (47). A slider (63) is provided on the baffle plate (47). A V-groove (64) is provided on the slider (63) to cooperate with the contact of the first micro switch (62). A V-cam (65) is provided on the main shaft (2). A second micro switch (66) and a third micro switch (67) to cooperate with the V-cam (65) are symmetrically installed on the frame (1) on both sides of the V-cam (65).

8. The environmentally shielded on-cabinet isolation mechanism of claim 5, wherein: The front panel (54) is also provided with a locking mounting plate (68), and the locking mounting plate (68) is provided with a pneumatic component (69). The end of the baffle plate (47) near the opening and closing operation hole (55) is provided with a locking bend (70) for cooperating with the protruding end of the pneumatic component (69).

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